23
Figure 10: 2 x 2 port valve system (“S” plan)
Figure 9: 2 port valve in conjunction with a 3 port mid-position valve system
(“Y” plan)
CYLINDER (DHW) 2-PORT
VALVE (SUPPLIED)
WIRING CENTRE
CYLINDER INDIRECT
THERMAL CONTROLS
NOTES:
1. A DOUBLE POLE ISOLATING SWITCH MUST BE INSTALLED IN THE MAINS SUPPLY.
2. ALL EARTH CONNECTIONS MUST BE LINKED BACK TO THE MAINS EARTH SUPPLY.
3. ASSUMES BASIC BOILER WITH EXTERNAL PUMP.
4. DO NOT MOUNT WIRING CENTRE ON CYLINDER.
5. THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY, HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS.
THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM. THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE
CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM.
KEY
Bl BLUE
Br BROWN
G GREY
O ORANGE
GY GREEN/YELLOW
DHW DOMESTIC HOT WATER
HTG HEATING
1 2 3 4 5 6 7 8 9
10
11 12 13 14 15 16
Bl Br G O GY
PROGRAMMER
ROOM STAT
3-PORT MID POSITION VALVE
BOILER
PUMP
1
3 2
BI W G O
1
GY
N
L
N L
1
2
N
3
L
HTG
ON
DHW
ON
DHW
OFF
L
N
G
GY
CYLINDER (DHW)
ZONE VALVE
(SUPPLIED)
WIRING
CENTRE
CYLINDER INDIRECT
THERMAL CONTROLS
1 3 2
NOTES:
1. A DOUBLE POLE ISOLATING SWITCH MUST BE INSTALLED IN THE MAINS SUPPLY.
2. ALL EARTH CONNECTIONS MUST BE LINKED BACK TO THE MAINS EARTH SUPPLY.
3. DO NOT MOUNT WIRING CENTRE ON CYLINDER.
4. THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY, HEATRAE SADIA ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS.
THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM. THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE
CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM.
KEY
Bl BLUE
Br BROWN
G GREY
O ORANGE
GY GREEN/YELLOW
DHW DOMESTIC HOT WATER
HTG HEATING
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Bl Br
O
G
GY
Bl Br
O
N
L
HTG
ON
DHW
ON
PROGRAMMER
1 2 3
BOILER
PUMP
N L
N L
3-PORT MID POSITION VALVE
ROOM STAT
L
N
